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International Journal of Antennas and Propagation
Volume 2015, Article ID 510720, 10 pages
http://dx.doi.org/10.1155/2015/510720
Research Article

Target Localization with a Single Antenna via Directional Multipath Exploitation

1Electrical Engineering Department, King Fahd University of Petroleum & Minerals (KFUPM), P.O. Box 1734, Dhahran 31261, Saudi Arabia
2Center for Advanced Communications, College of Engineering, Villanova University, 800 E. Lancaster Avenue, Villanova, PA 19085, USA

Received 29 September 2014; Accepted 16 December 2014

Academic Editor: Ahmad Safaai-Jazi

Copyright © 2015 Ali H. Muqaibel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Target localization in urban sensing can benefit from angle dependency of the pulse shape at a radar receiver antenna. We propose a localization approach that utilizes the embedded directivity in ultra-wideband (UWB) antennas to estimate target positions. A single radar unit sensing operation of indoor targets surrounded by interior walls is considered, where interior wall multipaths are exploited to provide target cross-range. This exploitation assumes resolvability of the multipath components, which is made possible by the virtue of using UWB radar signals. The proposed approach is most attractive when only few multipaths are detectable due to propagation obstructions or owing to low signal-to-noise ratios. Both simulated and experimental data are used to demonstrate the effectiveness of the proposed approach.